Extracts a subtree from a tree object of the classes
treethresh
or wtthresh
by pruning
according to a specified value of the complexity parameter \(C\).
# S3 method for treethresh
subtree(object, C)
# S3 method for wtthresh
subtree(object, C)
An object of the class treethresh
or
wtthresh
from which a subtree is to be extracted.
The value of the complexity parameter \(C\) to be used for the pruning.
subtree
returns an object of the class
treethresh
or wtthresh
that contains a
tree pruned at value \(C\) (see the function prune
for details on the pruning process).